The IEEE 488 Command Messages table lists IEEE 488 command messages that are command bytes, which you can use to configure the GPIB state.
For more information about the messages table, refer to the ANSI/IEEE Standard 488.1-1987, IEEE Standard Digital Interface for Programmable Instrumentation, and ANSI/IEEE Standard 488.1-2003, IEEE Standard for Higher Performance Protocol for the Standard Digital Interface for Programmable Instrumentation.
Refer to the Multiline Interface Message Definitions table below the IEEE 488 Command Messages table for the message definitions.
| Hex | Decimal | ASCII | Message |
|---|---|---|---|
| 00 | 0 | NUL | — |
| 01 | 1 | SOH | GTL |
| 02 | 2 | STX | — |
| 03 | 3 | ETX | — |
| 04 | 4 | EOT | SDC |
| 05 | 5 | ENQ | PPC |
| 06 | 6 | ACK | — |
| 07 | 7 | BEL | — |
| 08 | 8 | BS | GET |
| 09 | 9 | HT | TCT |
| 0A | 10 | LF | — |
| 0B | 11 | VT | — |
| 0C | 12 | FF | — |
| 0D | 13 | CR | — |
| 0E | 14 | SO | — |
| 0F | 15 | SI | — |
| 10 | 16 | DLE | — |
| 11 | 17 | DC1 | LLO |
| 12 | 18 | DC2 | — |
| 13 | 19 | DC3 | — |
| 14 | 20 | DC4 | DCL |
| 15 | 21 | NAK | PPU |
| 16 | 22 | SYN | — |
| 17 | 23 | ETB | — |
| 18 | 24 | CAN | SPE |
| 19 | 25 | EM | SPD |
| 1A | 26 | SUB | — |
| 1B | 27 | ESC | — |
| 1C | 28 | FS | — |
| 1D | 29 | GS | — |
| 1E | 30 | RS | — |
| 1F | 31 | US | CFE |
| 20 | 32 | SP | MLA0 |
| 21 | 33 | ! | MLA1 |
| 22 | 34 | " | MLA2 |
| 23 | 35 | # | MLA3 |
| 24 | 36 | $ | MLA4 |
| 25 | 37 | % | MLA5 |
| 26 | 38 | & | MLA6 |
| 27 | 39 | ' | MLA7 |
| 28 | 40 | ( | MLA8 |
| 29 | 41 | ) | MLA9 |
| 2A | 42 | * | MLA10 |
| 2B | 43 | + | MLA11 |
| 2C | 44 | , | MLA12 |
| 2D | 45 | - | MLA13 |
| 2E | 46 | . | MLA14 |
| 2F | 47 | / | MLA15 |
| 30 | 48 | 0 | MLA16 |
| 31 | 49 | 1 | MLA17 |
| 32 | 50 | 2 | MLA18 |
| 33 | 51 | 3 | MLA19 |
| 34 | 52 | 4 | MLA20 |
| 35 | 53 | 5 | MLA21 |
| 36 | 54 | 6 | MLA22 |
| 37 | 55 | 7 | MLA23 |
| 38 | 56 | 8 | MLA24 |
| 39 | 57 | 9 | MLA25 |
| 3A | 58 | : | MLA26 |
| 3B | 59 | ; | MLA27 |
| 3C | 60 | < | MLA28 |
| 3D | 61 | = | MLA29 |
| 3E | 62 | > | MLA30 |
| 3F | 63 | ? | UNL |
| 40 | 64 | @ | MTA0 |
| 41 | 65 | A | MTA1 |
| 42 | 66 | B | MTA2 |
| 43 | 67 | C | MTA3 |
| 44 | 68 | D | MTA4 |
| 45 | 69 | E | MTA5 |
| 46 | 70 | F | MTA6 |
| 47 | 71 | G | MTA7 |
| 48 | 72 | H | MTA8 |
| 49 | 73 | I | MTA9 |
| 4A | 74 | J | MTA10 |
| 4B | 75 | K | MTA11 |
| 4C | 76 | L | MTA12 |
| 4D | 77 | M | MTA13 |
| 4E | 78 | N | MTA14 |
| 4F | 79 | O | MTA15 |
| 50 | 80 | P | MTA16 |
| 51 | 81 | Q | MTA17 |
| 52 | 82 | R | MTA18 |
| 53 | 83 | S | MTA19 |
| 54 | 84 | T | MTA20 |
| 55 | 85 | U | MTA21 |
| 56 | 86 | V | MTA22 |
| 57 | 87 | W | MTA23 |
| 58 | 88 | X | MTA24 |
| 59 | 89 | Y | MTA25 |
| 5A | 90 | Z | MTA26 |
| 5B | 91 | [ | MTA27 |
| 5C | 92 | \ | MTA28 |
| 5D | 93 | ] | MTA29 |
| 5E | 94 | ^ | MTA30 |
| 5F | 95 | – | UNT |
| 60 | 96 | ` | MSA0, PPE |
| 61 | 97 | a | MSA1, PPE, CFG1 |
| 62 | 98 | b | MSA2, PPE, CFG2 |
| 63 | 99 | c | MSA3, PPE, CFG3 |
| 64 | 100 | d | MSA4, PPE, CFG4 |
| 65 | 101 | e | MSA5, PPE, CFG5 |
| 66 | 102 | f | MSA6, PPE, CFG6 |
| 67 | 103 | g | MSA7, PPE, CFG7 |
| 68 | 104 | h | MSA8, PPE, CFG8 |
| 69 | 105 | i | MSA9, PPE, CFG9 |
| 6A | 106 | j | MSA10, PPE, CFG10 |
| 6B | 107 | k | MSA11, PPE, CFG11 |
| 6C | 108 | l | MSA12, PPE, CFG12 |
| 6D | 109 | m | MSA13, PPE, CFG13 |
| 6E | 110 | n | MSA14, PPE, CFG14 |
| 6F | 111 | o | MSA15, PPE, CFG15 |
| 70 | 112 | p | MSA16, PPD |
| 71 | 113 | q | MSA17, PPD |
| 72 | 114 | r | MSA18, PPD |
| 73 | 115 | s | MSA19, PPD |
| 74 | 116 | t | MSA20, PPD |
| 75 | 117 | u | MSA21, PPD |
| 76 | 118 | v | MSA22, PPD |
| 77 | 119 | w | MSA23, PPD |
| 78 | 120 | x | MSA24, PPD |
| 79 | 121 | y | MSA25, PPD |
| 7A | 122 | z | MSA26, PPD |
| 7B | 123 | { | MSA27, PPD |
| 7C | 124 | | | MSA28, PPD |
| 7D | 125 | } | MSA29, PPD |
| 7E | 126 | ~ | MSA30, PPD |
| 7F | 127 | DEL | — |
| Message | Definition |
|---|---|
| CFE | Configuration Enable (This multiline interface message is part of the IEEE 488.1-2003 specification and supports the HS488 high-speed protocol.) |
| CFG | Configure (This multiline interface message is part of the IEEE 488.1-2003 specification and supports the HS488 high-speed protocol.) |
| DCL | Device Clear |
| GET | Group Execute Trigger |
| GTL | Go To Local |
| LLO | Local Lockout |
| MLA | My Listen Address |
| MSA | My Secondary Address |
| MTA | My Talk Address |
| PPC | Parallel Poll Configure |
| PPD | Parallel Poll Disable |
| PPE | Parallel Poll Enable |
| PPU | Parallel Poll Unconfigure |
| SDC | Selected Device Clear |
| SPD | Serial Poll Disable |
| SPE | Serial Poll Enable |
| TCT | Take Control |
| UNL | Unlisten |
| UNT | Untalk |